XFileSharing Pro - add new server problem

[zedo00]

server has worked so far, but a few hours does not work. Files uploaded works correctly, but uploading does not work.
When you I edit server, I get errors.

api.cgi: OK
temp dir exist: OK
temp dir mkdir: ERROR
temp dir rmdir: ERROR
tmp dir exist: OK
tmp dir mkdir: OK
tmp dir rmdir: OK
upload dir exist: OK
upload dir mkdir: ERROR
upload dir rmdir: ERROR
htdocs dir exist: OK
htdocs dir mkdir: OK
htdocs dir symlink: OK
htdocs dir symlink del: OK
htdocs dir rmdir: OK
config read: OK
config write: ERROR
fs.cgi: ERROR 500 Can't connect to v****:80 (connect: Permission denied)
upload.cgi: OK
htdocs URL accessibility: OK

main server and another extra server work perfectly.

[ufkabakan]

Check disk usage, may your disk/partition is full

[zedo00]

Check disk usage, may your disk/partition is full

I check, but disk/partition is not full

[admin]

Try to disable SELinux.

[zedo00]

Try to disable SELinux.

thank you. now work perfectly.